Fig. 2From: A prospective clinical cohort-based study of the prevalence of OCD, obsessive compulsive and related disorders, and tics in families of patients with OCDFamily’s prevalence of tics of patients with and without tics. Prevalence of tics in family members (first- and second-degree) of patients with and without tics: (A) Israeli cohort, (B) Australian center. A Overall risk – 51%, risk difference – 22%, risk ratio – 1.5. B Overall risk – 7%, risk difference 8%, risk ratio – 2.4Back to article page